Exams › NEET › Biology

Which one of the following micro-organisms is used for production of citric acid in industries?

1. Penicillium citrinum
2. Aspergillus niger
3. Rhizopus nigricans
4. Lactobacillus bulgaris

Correct answer: Aspergillus niger

Solution

Aspergillus niger is the standard industrial microbe used to produce citric acid because it efficiently converts sugars into citric acid during fermentation. The other options are associated with different products or roles, not citric acid manufacture.

Related NEET Biology questions

• Which of the following is put into Anaerobic sludge digester for further sewage treatment?
• Match the following organisms with the products they produce: (a) Lactobacillus, (b) Saccharomyces cerevisiae, (c) Aspergillus niger, (d) Acetobacter aceti; Products: (i) Cheese, (ii) Curd, (iii) Citric acid, (iv) Bread, (v) Acetic acid. Select the correct option.
• Which of the following in sewage treatment removes suspended solids?
• Which of the following is a commercial blood cholesterol lowering agent?
• What gases are produced in anaerobic sludge digesters?
• The guts of cow and buffalo possess:

⚔️ Practice NEET Biology free + battle 1v1 →